Yet considering how many people the average social media user is connected to, it is also a great way to ensnare a lot ofinnocent people who share nothing more than a love of cat photos in a government investigation.
The judge, Mr Justice Forbes, said that there was nothing in any of the evidence to suggest anything other than the innocent passing on of information.
Nothing any of us can say could ever adequately express our feelings for the innocent victims of this appalling crime, but our thoughts are with them and their families.